netdev - [PATCH RFC net-next 07/14] net: dsa: mv88e6xxx: export mv88e6xxx_pcs_decode

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Message-Id: <E1qChbI-00Fms3-N2@rmk-PC.armlinux.org.uk>
Date: Fri, 23 Jun 2023 15:17:24 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Alexandre Belloni <alexandre.belloni@...tlin.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	"Ar__n__ __NAL" <arinc.unal@...nc9.com>,
	Claudiu Manoil <claudiu.manoil@....com>,
	Daniel Golle <daniel@...rotopia.org>,
	"David S. Miller" <davem@...emloft.net>,
	DENG Qingfang <dqfext@...il.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Landen Chao <Landen.Chao@...iatek.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	Matthias Brugger <matthias.bgg@...il.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>,
	Sean Wang <sean.wang@...iatek.com>,
	UNGLinuxDriver@...rochip.com,
	Vladimir Oltean <olteanv@...il.com>
Subject: [PATCH RFC net-next 07/14] net: dsa: mv88e6xxx: export
 mv88e6xxx_pcs_decode_state()

Rename and export the PCS state decoding function so our PCS can
make use of the functionality provided by this.

Reviewed-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/dsa/mv88e6xxx/serdes.c | 11 +++++------
 drivers/net/dsa/mv88e6xxx/serdes.h |  5 +++++
 2 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/serdes.c b/drivers/net/dsa/mv88e6xxx/serdes.c
index 80167d53212f..7ea36d04d9fa 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.c
+++ b/drivers/net/dsa/mv88e6xxx/serdes.c
@@ -45,9 +45,8 @@ static int mv88e6390_serdes_write(struct mv88e6xxx_chip *chip,
 	return mv88e6xxx_phy_write_c45(chip, lane, device, reg, val);
 }
 
-static int mv88e6xxx_serdes_pcs_get_state(struct mv88e6xxx_chip *chip,
-					  u16 bmsr, u16 lpa, u16 status,
-					  struct phylink_link_state *state)
+int mv88e6xxx_pcs_decode_state(struct device *dev, u16 bmsr, u16 lpa,
+			       u16 status, struct phylink_link_state *state)
 {
 	state->link = false;
 
@@ -88,7 +87,7 @@ static int mv88e6xxx_serdes_pcs_get_state(struct mv88e6xxx_chip *chip,
 			state->speed = SPEED_10;
 			break;
 		default:
-			dev_err(chip->dev, "invalid PHY speed\n");
+			dev_err(dev, "invalid PHY speed\n");
 			return -EINVAL;
 		}
 	} else if (state->link &&
@@ -211,7 +210,7 @@ int mv88e6352_serdes_pcs_get_state(struct mv88e6xxx_chip *chip, int port,
 		return err;
 	}
 
-	return mv88e6xxx_serdes_pcs_get_state(chip, bmsr, lpa, status, state);
+	return mv88e6xxx_pcs_decode_state(chip->dev, bmsr, lpa, status, state);
 }
 
 int mv88e6352_serdes_pcs_an_restart(struct mv88e6xxx_chip *chip, int port,
@@ -942,7 +941,7 @@ static int mv88e6390_serdes_pcs_get_state_sgmii(struct mv88e6xxx_chip *chip,
 		return err;
 	}
 
-	return mv88e6xxx_serdes_pcs_get_state(chip, bmsr, lpa, status, state);
+	return mv88e6xxx_pcs_decode_state(chip->dev, bmsr, lpa, status, state);
 }
 
 static int mv88e6390_serdes_pcs_get_state_10g(struct mv88e6xxx_chip *chip,
diff --git a/drivers/net/dsa/mv88e6xxx/serdes.h b/drivers/net/dsa/mv88e6xxx/serdes.h
index e245687ddb1d..93d40d66d7c5 100644
--- a/drivers/net/dsa/mv88e6xxx/serdes.h
+++ b/drivers/net/dsa/mv88e6xxx/serdes.h
@@ -12,6 +12,8 @@
 
 #include "chip.h"
 
+struct phylink_link_state;
+
 #define MV88E6352_ADDR_SERDES		0x0f
 #define MV88E6352_SERDES_PAGE_FIBER	0x01
 #define MV88E6352_SERDES_IRQ		0x0b
@@ -107,6 +109,9 @@
 #define MV88E6393X_ERRATA_4_8_REG		0xF074
 #define MV88E6393X_ERRATA_4_8_BIT		BIT(14)
 
+int mv88e6xxx_pcs_decode_state(struct device *dev, u16 bmsr, u16 lpa,
+			       u16 status, struct phylink_link_state *state);
+
 int mv88e6185_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
 int mv88e6341_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
 int mv88e6352_serdes_get_lane(struct mv88e6xxx_chip *chip, int port);
-- 
2.30.2